GRO J1735-27

A. J. Castro-Tirado, Laboratorio de Astrofisica Espacial y Fisica Fundamental, Madrid, reports: "We examined the error box of the x-ray transient source GRO J1735-27 (IAUC 6207, 6222) on a Schmidt plate taken by K. Birkle at the German-Spanish Calar Alto Observatory on Aug. 25; nothing obvious down to B about 17 is seen. We also expanded our search to the error box of the Ginga source GS 1734-275 (IAUC 4571, 6212), slightly outside of the BATSE error box; that result was negative as well. Further soft-x-ray observations are encouraged to confirm whether GRO J1735-27 is related to the x-ray transient observed by ROSAT (RX J1735.9-2726, IAUC 6212) and Mir-Kvant/TTM (KS 1732-273, IAUC 6216)."